README.md

File Transfer

Padrón	Alumno
104105	Jonathan David Rosenblatt
104048	Lautaro Francetich
104077	Nicolás Martín Podesta

Ejecución de los Programas

Para obtener la información de ejecución de cada programa se debe utilizar el flag -h

Ejecución del programa

Inicializar el servidor

python3.10 start-server.py -v -H host -p port -s /database

Upload file to the server with Stop & Wait

python3.10 upload.py -v -s /source -n file -H host -p port -sw

Download file to the server with Stop & Wait

python3.10 download.py -v -d /destination -n file -H host -p port -sw

Upload file to the server with Selective Repeat

python3.10 upload.py -v -s /source -n file -H host -p port -sr

Download file to the server with Selective Repeat

python3.10 download.py -v -d /destination -n file -H host -p port -sr

Tamaños de Paquete

• Initial Message:

+-------------------+---------------------+--------------------+------------------------+
|   carga/descarga  |  is stop and wait   |       fsize        |        filename        |
|      1 byte       |       1 byte        |      4 bytes       |        256 bytes       |
+-------------------+---------------------+--------------------+------------------------+
Total -> 262 bytes

• ACK-SEQ Package

+---------------------+------------------------+
|         seq         |         error          |
|       4 bytes       |        4 bytes         |
+---------------------+------------------------+
Total -> 8 bytes

• Paquete normal:

+---------------------+--------------------+------------------------+----------------------+------------------------+
|         seq         |         end        |         error          |       checksum       |          data          |
|       4 bytes       |        1 byte      |        4 bytes         |       16 bytes       |        256 bytes       |
+---------------------+--------------------+------------------------+----------------------+------------------------+
Total -> 281 bytes